Figures 366-377. — Cells of the heteropliil granulocyte series found in bone marrow of adult chicken, 

 except figure 376, which was from a day -old chick. 2,470 X. 



366 Large early granuloblast. This size is found .373, 374 Heterophil mesomyelocytes. The beginning 

 but rarely. rods are indicated by the darkly stained bodies 



367 Typical early granuloblast. It is not possible coming from the precursor spheres. 



in the granuloblast stage to determine ^vhich 375 Heterophil metamyelocyte. More than half of 

 type of granulocyte will be produced from it. ,,,.,, ,",",, 



nao orn tj 4 t.-i * 1 1 1 i the full complement of rods have appeared. 



3os, .369 Heterophil metagranuloblasts. ^^ 



370-372 Heterophil promyelocytes. Magenta rings are S'*^ Heterophil metamyelocyte in mitotic division, 



present and also cytosomal vacuoles containing Early telephase. 



rod precursor spheres. 377 Mature heterophil. 



188 



